Fast V-Mode

13th Generation Intel® Core™ and Intel® Core™ 14th Generation Processors

Datasheet, Volume 1 of 2
Supporting 13th Generation Intel® Core™ Processor for S, H, P, HX, and U Processor Line Platforms, formerly known as Raptor Lake, Intel® Core™ 14th Generation Processor for S, HX, and U Processor Line Platform, formerly known as Raptor Lake Refresh and Intel® Xeon™ E 2400 Processor, formerly known As Raptor Lake–E

ID 743844

Date 03/25/2024

Version

An SoC integrated detector monitors when the SoC load current exceeds a preset threshold by monitoring for SoC voltage domain voltage droop. The SoC compares the IMVP VR output voltage with a preset threshold voltage (Vtrip) and when the IMVP VR output voltage reached this Vtrip, the SoC throttles itself to reduce the SoC load current.

IMVP9.1 VRs enhance this detector by adding a cycle-by-cycle current limiting feature where the IMVP VR quickly enters cycle by cycle current limit (becomes a current source) with the VR output current limited to a preset value (I TRIP ) as set in the VR ICC_limit register

Terminology

IccMax is the maximum current the processor can draw, typically seen running a virus application (stress applications specifically designed to push the SoC to maximum power). This is the current used to design the voltage regulator decoupling.

PMax (PL4) is the maximum instantaneous electrical power drawn by the SoC (per power rail), typically seen running a virus app (stress applications specifically designed to reach maximum consumed power) with an all core turbo and Tjmax scenario.

IccMax.app is less than IccMax and is the electrical current drawn by the SoC (per power rail) while running a typical user realistic application(s) scenario at P0nmax and Tjmax. It corresponds to PMax.App.

PMax.App (PL4.App) is less than PMax and is the power drawn by the SoC (per power rail) while running a typical user realistic application(s) scenario at P0nmax and Tjmax. It corresponds to IccMax.App.

I_TRIP is VR output current limit threshold above which the VR goes into current limit. This current is greater than IccMax.App and less than IccMax. It is determined by customer-specific VR current capability and the VR IMON measurement tolerance (TOL IMON).
Generally, I_TRIP = IccMax.App/(1-TOLI MON ). Setting I_TRIP this way guarantees the VR never goes into current limit below IccMax.APP.

I_TRIPMax is the peak current the VR FETs and inductors could see accounting for the VR controller current measurement tolerance (TOL IMON ). The SoC VR and system input power sources must be able to sustain this current for at least 10ms. Note: TOL_IMON can be sometimes called as ITRIP_TOL or ITRIP_ACCURACY

V_TRIP is the output voltage level below which the SoC will self-throttle. In application, this voltage is internally set in the SoC and is not visible external to the SoC. For the purposes of VRTT testing, a Vtrip will be provided for use with the Python* test script used for FVM testing

Benefits

The SoC droop detector and IMVP cycle by cycle limiting work together to allow the voltage regulator inductors and FETs to be sized for realistic workload current (~ICCMAX.APP) instead of virus currents (ICCMAX)

Allows power sources to be sized for realistic workload currents, by shielding them from SoC large dynamic loading events that occur when the SoC current exceeds the worst case realistic maximum current (ICCMAX.APP).